Container lining device and method for using the same

Abstract

A container lining device and a method for using the same are disclosed. The container lining device for being installed in a container includes a sealed rectangular bag made of a pliable material and having a single-layer or multi-layer bag wall. The bag has a front side centrally provided with a valve, and a rear side provided transversely and longitudinally with plural pulling straps whose free ends extend out from edges of the bag. Liquid or fluid cargo is delivered into and out of the container lining device through the valve. After unloading, the container lining device is taken out through an opening of the container and replaced by another such container lining device to facilitate reloading. The container lining device facilitates saving the time and cost otherwise required for cleaning the container, increasing the utilization rate and service life of the container, and lowering overall cargo transportation costs.

1 . A container lining device, comprising a sealed bag made of a pliable material, wherein the bag is provided with a valve. 
   
   
       2 . The container lining device of  claim 1 , wherein the bag is provided with one or more said valves. 
   
   
       3 . The container lining device of  claim 1 , wherein the bag has a single-layer or multi-layer bag structure. 
   
   
       4 . The container lining device of  claim 1 , wherein the bag has one or more pulling straps. 
   
   
       5 . The container lining device of  claim 1 , wherein the bag is rectangular, and the valve is provided at a central portion of a front side of the rectangular bag, a free end of the pulling strap extends out from an edge of the bag. 
   
   
       6 . A method for using the container lining device of  claim 5 , comprising steps of:
 (1) covering protruding portions and valves at an inner bottom of a container with plastic material;   (2) folding the bag of the container lining device into a strip and then placing the folded bag into the container while holding the free end of the pulling strap, so that the bag reaches the inner bottom of the container;   (3) injecting a liquid into the bag through the valve with a hose; and   (4) drawing the liquid out of the bag through the valve with a hose.   
   
   
       7 . The method of  claim 6 , further comprising, between the steps (3) and (4), a step (3b) of filling air or an inert gas into a gap between the bag and, the container. 
   
   
       8 . The method of  claim 6 , further comprising, after the step (4), a step (4b) of sucking up a residue in the bag with a suction hose.